setupapi: Sign-compare warnings fix.
diff --git a/dlls/setupapi/parser.c b/dlls/setupapi/parser.c
index 8c8a518..c2bd84c 100644
--- a/dlls/setupapi/parser.c
+++ b/dlls/setupapi/parser.c
@@ -199,7 +199,7 @@
 {
     struct section *section;
     struct line *line;
-    int i;
+    unsigned int i;
 
     if (section_index < 0 || section_index >= file->nb_sections) return NULL;
     section = file->sections[section_index];